Return-Path: Received: from mtain-dc03.r1000.mx.aol.com (mtain-dc03.r1000.mx.aol.com [172.29.64.131]) by air-ma09.mail.aol.com (v129.4) with ESMTP id MAILINMA092-b5354d78f5cc27a; Thu, 10 Mar 2011 11:01:16 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dc03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 8642E380006C4; Thu, 10 Mar 2011 11:01:12 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PxiHV-00055y-Gv for rs_out_1@blacksheep.org; Thu, 10 Mar 2011 16:00:05 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PxiHU-00055p-UU for rsgb_lf_group@blacksheep.org; Thu, 10 Mar 2011 16:00:04 +0000 Received: from smtpa1.mediabeam.com ([194.25.41.13]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PxiHR-0003xP-Vw for rsgb_lf_group@blacksheep.org; Thu, 10 Mar 2011 16:00:04 +0000 Received: from UMS02-SMTP3 (balancer04.mediabeam.com [10.100.1.40]) by smtpa1.mediabeam.com (8.13.8/8.13.1) with ESMTP id p2AFxuB8030141 for ; Thu, 10 Mar 2011 16:59:56 +0100 From: uwe-jannsen@kabelmail.de To: rsgb_lf_group@blacksheep.org Message-ID: <4de6fab766f34e85aafd11d07b1a7a36@kabelmail.de> Date: Thu, 10 Mar 2011 16:59:54 +0100 X-Priority: 3 (Normal) MIME-Version: 1.0 X-Spam-Score: 0.6 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,NO_REAL_NAME=0.55 Subject: Re: Re: Re: LF: GRABBER Content-Type: multipart/alternative; boundary="----84406F85C0B244E8B87322D78B39EEB3" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, NO_REAL_NAME,PRIORITY_NO_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G x-aol-sid: 3039ac1d40834d78f5c80f39 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) ------84406F85C0B244E8B87322D78B39EEB3 Content-Type: text/plain; charset=Windows-1252 Content-Transfer-Encoding: quoted-printable Hi all, I fiddled about finding a somewhat better qrg. the result is: now dj8wx is transmitting on 8970,0177Hz. best regards Uwe/dj8wx Von: rsgb_lf_group@blacksheep.org Gesendet: 10.03.2011 16:24 An: rsgb_lf_group@blacksheep.org Betreff: Re: Re: LF: GRABBER Hi Stefan, hi Henny, Stefan, part of your question has been answered by Paul Nichelson. pse see: http://tech.groups.yahoo.com/group/VLF_Group/message/17456=20 the reference is a GPS diciplined 10MHz signal. =20 no divider in use. the accurate sine wave is generated by the high speed= microcontroller AT90S2313followed by a R matrixc and a =A0lowpass filter= cutqrg 10kHz.=20 the phase is GPS sychronized. the time is locked to GPS 1pps.=20 negative: the resolution (step size) is 0,3mHz (32-bit). theoretically. re= ally: 63xmHz. the eeprom doesnt take any notice of the last two signs of= the HEX group.=A0so it can generate near 8970,000Hz: =A08970,022xHz or 89= 69,959xHz.=20 best regards=20 Uwe/dj8wx=20 Von: rsgb_lf_group@blacksheep.org Gesendet: 10.03.2011 13:42 An: rsgb_lf_group@blacksheep.org Betreff: Re: LF: GRABBER Hello Henny, Uwe, VLF, Ah, you've already seen it ;-)=20 I just wanted to post that i have splitted my 60000 window. Now the range= arround 8970.000 +- 4 uHz and 8970.020...8970.025 is visible. Since it has stored the last 10 days or so in the buffer, DJ8WX's transmi= ssion of last week is now visible in 47 uHz as well. Uwe, what is the exact frequency on which you are transmitting? What is= the original reference frequency and what is the divider ratio? May there be a conflict with Hennys transmission? Now we are in a range= where it is important to know the frequency to a uHz! If i look at Victor= 's spectrogram, it looks Henny is slightly below 8970.022 Hz, maybe 0.2 mH= z. But this may be not enough to make out the difference (?) Oh, i just lo= oked at the spectrogram and see a faint trace at 8970.0217 Hz. Is it you,= Henny? It's still to much guesswork but a first step on the way to a prop= er ID. 3 dB QRO would be a good way to check that :-) 73, Stefan/DK7FC Am 10.03.2011 13:11, schrieb henny van elst: =20 Hi Stefan,=20 tu for the 60000grabber,=20 i will keep the tx on,=20 henny pa3cpm=20 best 73's to All. ------84406F85C0B244E8B87322D78B39EEB3 Content-Type: text/html; charset=Windows-1252 Content-Transfer-Encoding: quoted-printable Hi all,

I fiddled about finding a somewhat better qrg.
the result is:
now dj8wx is transmitting on 8970,0177Hz.

best regards
Uwe/dj8wx



Von: rsgb_lf_group@blacksheep.org
Gesendet: 10.03.2011 16:24
An: rsgb_lf_group@blacksheep.org
Betreff: Re: Re: LF: GRABBER


Hi Stefan, hi Henny,

Stefan, part of your question has been answered by Paul Nichelson.
pse see:

http= ://tech.groups.yahoo.com/group/VLF_Group/message/17456

the reference is a GPS diciplined 10MHz signal.

no divider in use. the accurate sine wave is generated by the high speed microcontroller AT90S231= 3followed by a R matrixc and a  lowpass filter cutqrg 10kHz.

the phase is GPS sychronized. the time is locked to GPS 1pps.

negative: the resolution (step size) is 0,3mHz (32-bit). theoretically. really: 63xm= Hz. the eeprom doesnt take any notice of the last two signs of the HEX group. = ;so it can generate near 8970,000Hz:  8970,022xHz or 8969,959xHz.

best regards

Uwe/dj8wx


Von: rsgb_lf_group@blacksheep= .org
Gesendet: 10.03.2011 13:42
An: rsgb_lf_group@blacksheep.org
Betreff: Re: LF: GRABBER

Hello Henny, Uwe, VLF,

Ah, you've already seen it ;-)
I just wanted to post that i have splitted my 60000 window. Now the range arround 8970.000 +- 4 uHz and 8970.020...8970.025 is visible.
Since it has stored the last 10 days or so in the buffer, DJ8WX's transmission of last week is now visible in 47 uHz as well.

Uwe, what is the exact frequency on which you are transmitting? What is the original reference frequency and what is the divider ratio?

May there be a conflict with Hennys transmission? Now we are in a range where it is important to know the frequency to a uHz! If i look at Victor's spectrogram, it looks Henny is slightly below 8970.022 Hz, maybe 0.2 mHz. But this may be not enough to make out the difference (?) Oh, i just looked at the spectrogram and see a faint trace at 8970.0217 Hz. Is it you, Henny? It's still to much guesswork but a first step on the way to a proper ID. 3 dB QRO would be a good way to check that :-)



73, Stefan/DK7FC


Am 10.03.2011 13:11, schrieb henny van elst:
Hi Stefan,
 
tu for the 60000= grabber,
i will keep the= tx on,
henny pa3cpm
best 73's to All= .
 ------84406F85C0B244E8B87322D78B39EEB3--